Abstract: A system and a method for client-side deduplication system for a plurality of backup streams, generated by a backup and recovery client from a client database, is presented. The system includes a stream handler configured to generate a unique file name for an underlying file of each backup stream of the plurality of backup streams based on one or more data blocks in each backup stream. The system further includes a file creator configured to create a data file corresponding to each backup stream of the plurality of backup streams in a local cache of a client database server, wherein each data file has a file name corresponding to the unique file name generated by the stream handler. The client-system furthermore includes a dedupe module configured to dedupe subsequent backup streams based on the data files in the local cache.

Abstract: An object of the present disclosure is to provide a data communication system, a computing apparatus, a data communication method, and a program, which are capable of highly reliable data transfer with low latency between computing apparatuses. The present disclosure achieves a highly reliable communication path by directly connecting computing apparatuses via an optical path and transmitting data through the optical path. Further, the present disclosure uses the optical path to achieve RDAM over wavelength transmission in which existing RDMA-enabled protocol stacks such as InfiniBand and TCP/IP/Ether are eliminated. The present disclosure eliminates the protocol stacks, enabling transfer with lower latency than in a case of “simply performing RDMA transmission over the wavelength path”.

Abstract: A representative reconfigurable processing circuit and a reconfigurable arithmetic circuit are disclosed, each of which may include input reordering queues; a multiplier shifter and combiner network coupled to the input reordering queues; an accumulator circuit; and a control logic circuit, along with a processor and various interconnection networks. A representative reconfigurable arithmetic circuit has a plurality of operating modes, such as floating point and integer arithmetic modes, logical manipulation modes, Boolean logic, shift, rotate, conditional operations, and format conversion, and is configurable for a wide variety of multiplication modes. Dedicated routing connecting multiplier adder trees allows multiple reconfigurable arithmetic circuits to be reconfigurably combined, in pair or quad configurations, for larger adders, complex multiplies and general sum of products use, for example.

Abstract: The present disclosure generally relates optical amplifier modules. In one form for example, an optical amplifier module includes a booster optical amplifier configured to increase optical power of a first optical signal. The module also includes a preamp optical amplifier configured to increase optical power of a second optical signal and a pump laser optically coupled to the booster optical amplifier and the preamp optical amplifier. The pump laser is configured to provide a booster power to the booster optical amplifier and a preamp power to the preamp optical amplifier, the preamp power is effective to induce a gain in optical power to provide a target optical power of the second optical signal from the preamp optical amplifier, and the booster power is dependent on the preamp power.

Abstract: The present disclosure provides a method, apparatus and system for transmitting OMCI messages. The method includes receiving an OMCI message from a cloud server, wherein the cloud server supports vOMCI; judging whether the received OMCI message is associated with device information of the optical line terminal, if so, obtaining device association information corresponding to the received OMCI message, filling the device association information into the received OMCI message, and sending the filled OMCI message to the optical network terminal, otherwise, sending the received OMCI message directly to the optical network terminal.

Abstract: A representative reconfigurable processing circuit and a reconfigurable arithmetic circuit are disclosed, each of which may include input reordering queues; a multiplier shifter and combiner network coupled to the input reordering queues; an accumulator circuit; and a control logic circuit, along with a processor and various interconnection networks. A representative reconfigurable arithmetic circuit has a plurality of operating modes, such as floating point and integer arithmetic modes, logical manipulation modes, Boolean logic, shift, rotate, conditional operations, and format conversion, and is configurable for a wide variety of multiplication modes. Dedicated routing connecting multiplier adder trees allows multiple reconfigurable arithmetic circuits to be reconfigurably combined, in pair or quad configurations, for larger adders, complex multiplies and general sum of products use, for example.

Abstract: A breakdown determination system includes a switching device that switches a transmission path of optical signals between an upper network and a lower network, one or more intermediate communication devices that relay communication between the upper network and the lower network, a selection device that selects a standby port of the intermediate communication devices, a measurement device that connects to the selected standby port via the switching device and measures an optical signal of the connected standby port, a determination device that determines whether an intermediate communication device including the selected standby port breaks down based on a result of measuring the optical signal, and a storage device that stores a result of determining whether the intermediate communication device breaks down.

Abstract: Implementations described and claimed herein provide systems and methods for a configurable optical peering fabric to dynamically create a connection between participant sites without any physical site limitations or necessity of specialized client and network provider equipment being located within such a facility. Client sites to a network may connect to a configurable switching element to be interconnected to other client sites in response to a request to connect the first client site with a second site, also connected to network, via the switching element. A request may trigger verification of the requested and, upon validation, transmission of an instruction to the switching element to enable the cross connect within the switching element. The first site and the second site may thus be interconnected via the switching element in response to the request, without the need to co-locate equipment or to manually install a jumper between client equipment.

Abstract: In some examples, OTDR event detection and light power level measurement-based fiber optic link certification may include performing, at one end of a device under test (DUT) of a network, a light power level measurement. An OTDR measurement may be performed at the one end of the DUT to detect at least one event associated with the DUT. Based on analysis of the light power level measurement and the OTDR measurement, an event classification may be generated to classify the at least one event associated with the DUT.

Abstract: An optical routing device that includes a mounting component which includes a rechargeable battery and a processor that communicates over-the-air with a master communication device or one or more service communication devices via one or more RF supervisory links. The processor receives an instruction via the one or more RF supervisory links to control a movement of the mounting component along with the optical routing component such that an angle or a direction of deflection of one or more laser beams from an optical routing component of the optical routing device is changed. The optical routing component includes one or more laser beam handling regions configured to handle a plurality of laser beams concurrently in which a first laser beam is deflected via a first region for downstream data communication in downstream path and a second laser beam is deflected via a second region for upstream data communication in upstream path.

Abstract: A system for sending data in an optical network comprising a plurality of source nodes and destination nodes is disclosed. In one aspect, a source node generates, in a spectral band that is associated with it, a multi-carrier optical data signal obtained by modulation of a source signal at a source wavelength and sends it in the form of single-band data bursts that can be associated with distinct source wavelengths. A single-band data burst comprises, in addition to payload data symbols (PL), a sequence of learning symbols (TS) composed of a plurality of learning symbols. A control unit belonging to the control plane of the optical network determines, for at least one of the source nodes, instants of sending of the single-band data bursts and source wavelengths to be used for sending these single-band data bursts, as a function of a path time of the data bursts between the source node and one of the destination nodes associated with the source wavelength.

Abstract: In certain embodiments, cable patching may be facilitated. For example, identifiers corresponding to available ports for devices or objects within racks and required ports for patching devices into the racks may be determined. Cable patching schemes for the racks may be retrieved from sensors. The available ports, the required ports, and the cable patching schemes may be input into a prediction model, the prediction model being configured based on the inputs. New identifiers corresponding to new available ports for a new rack and new required ports for patching new devices into the new rack may be determined. A predicted cable patching scheme for patching the new rack may be obtained from the prediction model. In some embodiments, the predicted cable patching scheme may be transmitted to a user device.

Abstract: It is difficult to improve the usage efficiency of an optical communication network due to the passband narrowing effect in a wavelength selection process in an optical communication network using a wavelength division multiplexing system; therefore, an optical network management apparatus according to an exemplary aspect of the present invention includes wavelength selection information generating means for generating wavelength selection information on a wavelength selection process through which an optical path accommodating an information signal goes, with respect to each optical path; and wavelength selection information notifying means for notifying an optical node device through which the optical path goes of the wavelength selection information.

Abstract: The present disclosure relates to data processing methods and apparatus. One example method includes obtaining a first data block from first optical path data, adding padding data and the first data block into a target information bit in a first data frame to form target data, encoding the target data to obtain a first code block, and sending the first code block.

Abstract: A method, system, and apparatus for emulating impairments in a communication system.

Abstract: A forwarding table generation method is provided. The method includes: determining, by a forwarding device, a first timeslot set, where the first timeslot set includes multiple timeslots during which the forwarding device sends, to a first device by using a first flexible Ethernet group, multiple encoded data blocks generated by a physical coding sublayer; determining, by the forwarding device, a second timeslot set, where the second timeslot set includes multiple timeslots during which the forwarding device receives, by using a second FlexE group, the multiple encoded data blocks sent by a second device; and generating, by the forwarding device, a forwarding table, where the forwarding table includes a mapping relationship between the second FlexE group and the multiple timeslots included in the second timeslot set, and between the first FlexE group and the multiple timeslots included in the first timeslot set.

Abstract: A co-packaged, multiplane network includes: an enclosure; a portion of a first network plane disposed within the enclosure and comprising a first plurality of interconnected switches; a portion of a second network plane disposed within the enclosure and comprising a second plurality of interconnected switches, the second network plane being independent of the first network plane and having the same topology as the first network plane; and a plurality of connectors, each connector being communicatively coupled to a respective port of each of the first plurality of interconnected switches and the second plurality of interconnected switches.

Abstract: An apparatus for network switching may include a plurality of input ports, a plurality of output ports, and a subset of pre-configured interconnection patterns including some but not all of the possible interconnection patterns between the input ports and the output ports. The apparatus may be communicatively coupled to a network via the input ports and/or the output ports. The apparatus may be configured to switch to a first interconnection pattern and a second interconnection pattern from the subset of pre-configured interconnection patterns. The first interconnection pattern and the second interconnection pattern may each provide a set of connections between the input ports and the output ports. At least one signal between the input ports and the output ports may be transmitted via the first interconnection pattern and/or the second interconnection pattern. Related methods are also provided.

Abstract: A control apparatus for registering a connection state between component devices constituting a distributed optical transmission apparatus in a database includes: a device setting unit which performs setting such that light is output from a component device that is a connection source; and a registration processing unit which acquires a light reception level of each port in each component device on a side receiving the light, identifies a port having a light reception level higher than light reception levels of other ports, and registers a component device having the identified port and the identified port in the database as a connection destination of the component device that is the connection source.

Abstract: Systems and methods for utilizing backup paths to restore service in a network are provided. A method, according to one implementation, includes obtaining a route list as defined by a user, the route list including a plurality of explicitly-configured backup routes for restoring service between a source node and a destination node in a network when a working route is unavailable. The method also includes receiving input designating one or more of the explicitly-configured backup routes as one or more last-resort routes. In response to determining that the working route is unavailable and that the plurality of explicitly-configured backup routes, excluding the one or more last-resort routes, are unavailable, the method includes automatically computing one or more implicitly-computed backup routes.

Abstract: A transmission network system, data switching and transmission method, apparatus and equipment are provided. The transmission network system includes: a flexible Ethernet group located at a physical layer; at least one flexible Ethernet client carried over the flexible Ethernet group; a flexible Ethernet time slot control module, configured to map, according to a block sequence, service data coming from an upper layer onto the flexible Ethernet group, and recover, from a block sequence received by the flexible Ethernet group, corresponding service data; a flexible Ethernet switching module, configured to perform switching in a physical layer and transmission of service data according to the block sequence.

Abstract: If a configuration is employed in which modulation schemes used for an optical communication system can be switched depending on transmission conditions, the power consumption increases and the control becomes complex; therefore, an optical transmitter according to an exemplary aspect of the present invention includes an encoding means for encoding digital signals to be transmitted under a predetermined transmission condition over an optical carrier wave by using one of a plurality of encoding methods; an encoding control means for selecting a predetermined encoding method corresponding to the predetermined transmission condition from among the plurality of encoding methods and causing the encoding means to operate in accordance with the predetermined encoding method; a mapping means for mapping output bit signals output from the encoding means to modulation symbols; and an optical modulation means for modulating the optical carrier wave based on symbol signals output from the mapping means.

Abstract: Techniques are presented herein for load-balancing a sequence of packets over multiple network paths on a per-packet basis. In one example, a first network node assigns sequence numbers to a sequence of packets and load-balances the sequence of packets on a per-packet basis over multiple network paths of a network to a second network node. The second network node buffers received packets that are received over the multiple network paths of the network from the first network node and re-orders the received packets according to sequence numbers of the received packets.

Abstract: A method for allocating wireless resources based on sensitivity to interference provides a base station controller which, within an area of overlap of adjacent wireless cells, determines a set of neighboring cell pairs from a plurality of cells. The base station controller sorts the set of neighboring cell pairs according to the number of inner-pair interfered user equipment devices of each neighboring cell pair where inner-pair interfered user equipment devices are user equipment devices located in coverage areas of the neighboring cell pair and allocates resource blocks for each neighboring cell pair sequentially based on the sorted set. An apparatus employing the method is also disclosed.

Abstract: A system, method, and apparatus enabling synchronous and asynchronous data sources to be demapped from an oFrame container using a generic mapping system.

Abstract: An optical line terminal is provided with: an absorption unit that acquires first information of a type and a format that are dependent on a communication scheme and that converts the acquired first information into second information of a type and a format that are common to mutually different communication schemes; and a bandwidth allocation unit that determines bandwidth allocation of an upstream signal allocated to an optical network unit on the basis of the second information.

Abstract: An optical signal processing device is described herein for reducing electric wirings in an optical switch or an optical filter realized using an optical waveguide. The optical signal processing device includes an optical waveguide formed on a substrate. In the optical signal processing device, the optical waveguide includes at least one input port and at least one output port, a plurality of driven elements are provided including a phase shifter that produces a phase shift to an optical signal from the input port, each of the driven elements includes at least two control terminals, control wirings are provided to have control signals being time-division synchronized applied between the two control terminals, and the control wiring for accessing the driven element is shared by the plurality of driven elements.

Abstract: An optical line terminal (OLT) device virtualization method and a related device, the method including creating a plurality of virtual OLT systems on an OLT device, and determining system resources of each of the plurality of virtual OLT systems according to a preset rule. The system resources include a physical resource and a logical resource, and physical resources and logical resources of the plurality of virtual OLT systems are different from each other.

Abstract: A ranging method for an optical network, an OLT, an ONU, and an optical network system are provided. The OLT sends a bandwidth allocation message to the ONU; an OLT receiving a response message sent by an ONU in a first sending mode, wherein the first sending mode comprises sending power and a transmission rate; and the OLT performs ranging on the ONU according to the response message.

Abstract: Disclosed is a power optical transmission route and spectrum allocation method based on an elastic optical network, including: determining a set of alternative routes among nodes of a power communication network according to power communication topology; coloring the routes for classification, determining a total number of colors allocated, and determining the coloring of the set of alternative routes according to a hop count of route nodes and the total number of colors of spectrums; proportionally classifying the spectrums into blocks according to the total number of colors allocated and the number of route classes allocated to each color; selecting an optimal solution from the set of alternative routes by comprehensively considering a switching hop count and a network-wide risk balance value, to determine a route to execute service allocation; and determining positions of spectrum blocks according to the route selected and the allocated colors, to complete spectrum allocation.

Abstract: An orchestration layer includes one or more processing devices communicatively coupled to a plurality of domains in a multi-domain network, wherein the one or more processing devices are configured to receive a request for a path, wherein the path is requested from a source in a first domain to a destination in a second domain in a multi-domain network including a plurality of domains, relay the request to each domain in the multi-domain network, and wherein each domain in the multi-domain network is configured to compute a matrix fragment and the matrix fragments from a plurality of domains are used to find the path, and provide a response with the path from the source in the first domain to the destination in the second domain.

Abstract: In the technical field of optical communication a multi-path wavelength division multiplexing light receiving component including a substrate placed at the bottom of a housing is provided. The housing and substrate form an installation chamber, and include a light emitting unit, a light de-multiplexing unit, a reflector and a light receiving unit. The light emission unit, the light de-multiplexing unit, the reflector, and the light receiving unit are located inside the installation cavity, and the light emission unit, the light de-multiplexing unit, and the reflector are fixed on the housing, and the light receiving unit is fixed on the substrate. An optical module includes the multiplex wavelength division multiplexing optical receiving component. The length of the light receiving unit is shortened by reflecting an optical signal decomposed by a light de-multiplexing unit, and disposing the light receiving unit integrally below a reflector.

Abstract: Disclosed is a distributed antenna system (DAS). The DAS includes a DAS controller, which is an OpenFlow controller, and one or more DAS units in order to dynamically control a traffic transmission policy of the DAS units using an OpenFlow protocol, wherein the DAS controller generates and changes a traffic transmission policy by reflecting a traffic transmission policy change request by operator manipulation or a software-defined network supporting application and a need for changing of the traffic transmission policy according to a status of the DAS unit and a status of a port, and the DAS unit transmits received traffic to a destination according to the policy.

Abstract: An access network node is provided with: a link switching part configured to be capable of exchanging data by switching between an active link and a standby link established with an adjacent node; a data identification part configured to identify type of data to be exchanged with an accommodated terminal; and a controller configured to select, from between the active link and the standby link, a link to be used in exchanging data with the accommodated terminal, based on the data type.

Abstract: An embodiment of a segmented directional torus network on a chip (NOC) is disclosed. The provision of shortcut routers within directional torus rings achieves shorter ring segments, reducing message delivery latency and increasing NOC bandwidth. A shortcut router may be efficiently technology mapped into fracturable FPGA lookup tables.

Abstract: This optical path setting device comprises: a transmission characteristic calculating means for calculating an inter-endpoint transmission characteristic that is a characteristic for transmission between endpoints of an optical path accommodating traffic in a plurality of optical communication systems; a required wavelength bandwidth determining means for determining a required wavelength bandwidth that is a wavelength bandwidth meeting an arrival performance of the optical path on the basis of the inter-endpoint transmission characteristic; and an accommodating wavelength band determining means for determining, as an accommodating wavelength band for accommodating the optical path, a common wavelength band that is a wavelength band where an optical path having the required wavelength bandwidth can be allocated, and that is common to the plurality of optical communication systems.

Abstract: An optical line device for use in an optical line system is configured to connect to a second optical line device via a transmit fiber and a receive fiber. The optical line device includes a transmitter connected to the transmit fiber via an output port of the optical line device, wherein the transmitter is configured to transmit a polarization probe signal at a wavelength outside of a band of wavelengths used for traffic-bearing channels in the optical line signal, to a second polarimeter receiver at the second optical line device; and a polarimeter receiver connected to the receive fiber via an input port of the optical line device, wherein the polarimeter receiver is configured to receive a second polarization probe signal from a second transmitter transmitted from the second optical line device and to derive a measurement of SOP on the receive fiber based on the second polarization probe signal.

Abstract: Systems for differentially detecting light (e.g., in a flow stream) are described. Light detection systems according to certain embodiments include a plurality of photodetectors, an amplifier component and an electronic switch component having a plurality of switches in electrical communication with the plurality of photodetectors and the amplifier component. Systems and methods for differentially detecting light and optimizing the measurement of light emitted by a sample (e.g., in a flow stream) are also described. Kits having a photodetector array, an amplifier component and an electronic switch component are also provided.

Abstract: This application provides an encoding method, comprising: encoding first data to generate a first encoded sequence; encoding second data to generate a second encoded sequence, where a quantity of bits comprised in the first data is greater than a quantity of bits comprised in the second data, and a quantity of bits comprised in the first encoded sequence is equal to a quantity of bits comprised in the second encoded sequence; generating a symbol sequence by performing a PAM-4 modulation on an input signal, the first encoded sequence corresponds to a high bit of the input signal, and the second encoded sequence corresponds to a low bit of the input signal; and sending the symbol sequence. The method helps reduce a quantity of redundant bits, helps improve a code rate, and can reduce redundant information carried in a modulated symbol sequence.

Abstract: A method includes: determining a configuration of one or more networked hardware components; determining a usage level associated with one or more of the networked hardware components; determining a functional category of one or more of the networked hardware components based at least in part on the configuration of the one or more networked hardware components and the usage level associated with the one or more networked hardware components; and one or more of: outputting a suggested configuration of one or more of the networked hardware components based on the determined functional category of the one or more networked hardware components; and configuring of one or more of the networked hardware components based on the determined functional category of the one or more networked hardware components. Corresponding systems and computer program products are also disclosed.

Abstract: A communication terminal based on free space optical communication, a communication device, and a communication system are provided. The communication system includes a communication terminal, communication devices, and a master control device. The first communication device includes a light emitting unit configured to transmit an optical signal and a second switching control unit configured to establish a connection with the communication terminal that has received the optical signal. The communication terminal includes a light receiving unit configured to receive the optical signal transmitted by the first communication device and a first switching control unit configured to set the first communication device as a switching destination according to the optical signal.

Abstract: Implementations described and claimed herein provide systems and methods for a configurable optical peering fabric to dynamically create a connection between participant sites without any physical site limitations or necessity of specialized client and network provider equipment being located within such a facility. Client sites to a network may connect to a configurable switching element to be interconnected to other client sites in response to a request to connect the first client site with a second site, also connected to network, via the switching element. A request may trigger verification of the requested and, upon validation, transmission of an instruction to the switching element to enable the cross connect within the switching element. The first site and the second site may thus be interconnected via the switching element in response to the request, without the need to co-locate equipment or to manually install a jumper between client equipment.

Abstract: In one embodiment, a device configures a plurality of subinterfaces for each of a plurality of physical ports of a software defined network (SDN). The device allocates a fixed amount of bandwidth to each of the subinterfaces. The device forms a plurality of midlays for the SDN by assigning subsets of the plurality of subinterfaces to each of the midlays. The device assigns a network slice to one or more of the midlays, based on a bandwidth requirement of the network slice.

Abstract: Systems, methods, and non-computer-readable storage media for repairing a Network Element (NE) to transport data within a network. When a NE on the network encounters an error, such as a port not receiving data, that NE will issue an alarm. Unlike previous mechanisms for resolving the alarm, systems configured according to this disclosure provide for an automatic mechanism to repair the alarm. In some instances, this can mean automatically deploying resources to re-connect the NE according to a network plan. In other instances this can mean verifying the status of the NE matches a planned status (i.e., that the loss of signal, and the subsequent alarm, were planned for). If neither of these actions resolves the problems of the NE, the system can issue a notification for a network engineer to perform maintenance on the NE.

Abstract: Embodiments of the invention describe flexible (i.e., elastic) data center architectures capable of meeting exascale, while maintaining low latency and using reasonable sizes of electronic packet switches, through the use of optical circuit switches such as optical time, wavelength, waveband and space circuit switching technologies. This flexible architecture enables the reconfigurability of the interconnectivity of servers and storage devices within a data center to respond to the number, size, type and duration of the various applications being requested at any given point in time.

Abstract: A method, system, and apparatus for transmitting information over an coherent optical link comprising enabling synchronous and asynchronous data sources to be mapped together into a single payload using a generic mapping system which performs decoupling of a clock from each data source, and mapping data from each data source into a tributary of an oFrame.

Abstract: A communication network includes a coherent optics transmitter, a coherent optics receiver, an optical transport medium operably coupling the coherent optics transmitter to the coherent optics receiver, and a coherent optics interface. The coherent optics interface includes a lineside interface portion, a clientside interface portion, and a control interface portion.

Abstract: Various leaf switch modules including optical network interfaces, electrical network interfaces and packet processors are provided. Some of the leaf switch modules as described herein are adapted for upward transmission of signals from external client devices to an electrical fabric, and include O/E converters; other leaf switch modules are adapted for downward transmission of signals from an electrical fabric to external client devices, and include E/O converters. A third type of leaf switch as described herein is adapted for both upward and downward transmission of signals, and includes both types of converter. In addition to the leaf switch modules themselves, an optoelectronic switch containing a plurality of those leaf switches is also described.

Abstract: According to various aspects of the present disclosure, an apparatus is provided. In an aspect, the apparatus includes an optical transceiver having a first port, a second port and an optical switch coupled to the first port and the second port. The optical switch is switchable between a unidirectional port operation mode and a bidirectional port operation mode. When the optical switch is in the unidirectional port operation mode, the first port is configured to send a first optical signal, and the second port configured to receive a second optical signal. When the optical switch is in the bidirectional port operation mode, the first port configured to send the first optical signal and receive the second optical signal, and the second port configured to receive a third optical signal and not send the first signal.

Abstract: A Multi-Chip Module (MCM) includes a substrate and a switch controller on the substrate. An optical module on the substrate includes at least one optical crosspoint switch for selectively routing optical signals received by the optical module out of the MCM without the MCM converting the optical signals into electrical signals for processing data from the optical signals by the switch controller. According to another aspect, at least one memory on the substrate is electrically connected to the switch controller by a parallel bus. In another aspect, the MCM includes a plurality of input optical paths for receiving optical signals from outside the MCM, a plurality of output optical paths for transmitting optical signals from the MCM, and a plurality of optical crosspoint switches each connecting an input optical path to an output optical path to selectively route optical signals.